[gfortran] Fix NULL reference types.

[Richard Henderson]

On Wed, Aug 18, 2004 at 02:10:29PM +0100, Paul Brook wrote:
> As part of his int_cst sharing work Nathan spotted that gfortran was creating 
> null pointers with REFERENCE_TYPE. Apparently the optimizers [could] assume 
> that a reference type argument is never NULL.

So?  We can assume anything, since it would be incorrect to actually
touch such an argument, would it not?


r~